electric hand saw（）A、梅花扳手B、锤子C、电动手锯D、套筒扳手
electric hand saw（）
- A、梅花扳手
- B、锤子
- C、电动手锯
- D、套筒扳手
相关考题：
In order to cut down on the carbon emission, more people choose to travel＿．A．by electric car, bicycle or planeB．by private car, bicycle or busC．by bus, electric car or planeD．by bicycle, bus or electric car
阅读下列函数说明和C++代码，回答问题[说明]任何一种程序都是为了解决问题而撰写的，解决问题时需要实现一些特定的运算法则。在策略(Strategy)模式下，可以更换实现算法的部分而不留痕迹，切换整个算法，简化改为采用其他方法来解决同样问题。以下是一个“剪刀石头布”游戏。猜拳时的“策略”有2种方法：第一种是“猜赢后继续出同样的招式”(WinningStrategy)，第二种是“从上一次出的招式中，以概率分配方式求出下一个招式的几率”(ProbStrategy)。程序中定义了Hand类表示猜拳时的“手势”，类内部以0(石头)、1(剪刀)、2(布)来表示。Hand类的实例只会产生3个。以下是C++语言实现，能够正确编译通过。[C++代码]class Hand{private:int handvalue;static Hand *hand0;static Hand *hand1;static Hand *hand2;(1) ;Hand(int handvalue){this-handvalue = handvalue;}public:(2) Hand* getHand(int handvalue){/*省略具体实现*/}};Hand *Hand::hand0 = new Hand(0);Hand *Hand::hand1 = new Hand(1);Hand *Hand::hand2 = new Hand(2);class Strategy{public:(3) Hand* nextHand() = 0;};class WinningStrategy : public Strategy{private:bool won;Hand *prevHand;public:winningStrategy(){won = false;}Hand* nextHand(){if(!won){prevHand = Hand::getHand(rand()%3);}return prevHand;}};class probstrategy : public Strategy{public:Hand* nextHand(){int handvalue = 0;/*省略具体实现*/return Hand::getHand(handvalue);}};class Player{private:string name;Strategy* strategy;public:Player(string name, (4) strategy){this-name = name;this-strategy = strategy;}Hand *nextHand()(//向战略请示手势return (5) ;}};
The “Mode” selector switch on the autopilot steering stand is used to select any of the following with the EXCEPTION of ______.A.automatic pilot steeringB.hand-electric steeringC.non-follow-up steeringD.rudder adjustment
In order to cut down on the carbon emission，more people choose to travel______.A．by electric car，bicycle or planeB．by private car，bicycle or busC．by bus，electric car or planeD．by bicycle. bus or electric car
Which device is designed to automatically hold the load if power should fail to an electric winch?A.Pneumatic brakeB.Electromagnetic brakeC.Hand brakeD.Motor controller
The “Port-Off-Stbd” selector switch on an autopilot steering stand is used to ______．A.change from hand electric steering to automatic gyroB.change over one steering system to the otherC.change over hand electric steering to non-follow-upD.change over the port to the starboard bow thruster
A fireman’s outfit shall consist of______．I．Protective clothingII．a VHF setIII．Boots and gloves of electrically nonconducting materialIV．An electric safety lamp (hand lantern)V．An axeA.I，II，III，IVB.I，II，IV，VC.II，III，IV，VD.I，III，IV，V
Decide on the correct stress pattern of the answer to the question: Where did you see him?A．We saw him playing by the river.B．We saw him playing by the river.C．We saw him playing by the river.D．We saw him playing by the river.
共用题干Scientists working on a problem do not know and sometimes can't even guess what the final result will be.Late on Friday,8 November,1895,Professor Rontgen,a German physicist,was doing an experiment in his laboratory when he noticed something extraordinary.He had covered an electric bulb with black cardboard,and when he switched on the current he saw little dancing lights on his table.Now the bulb was completely covered;_________(46)?On the table there were some pieces of paper which had been covered with metal salts.It was on this paper that the lights were shining. Professor Rontgen took a piece of this paper and held it at a distance from the lamp.Between it and the lamp he placed a variety of objects,a book,a pack of cards,a piece of wood and a door key. __________(47).He called his wife into the laboratory and asked her to hold her hand between the lamp and a photographic plate._________(48),but she held up her hand for a quarter of an hour, and when the plate was developed there was a picture of the bones of her hand and of the ring on one finger. The mysterious ray could pass through the flesh and not through the bone or the ring.At a scientific meeting,Professor Rontegen called this new ray "the unknown" the X-ray. _________(49),and soon there were X-ray machines in all the big hospitals.The most obvious use for this discovery was to enable doctors to see exactly how a bone was fractured._________(50).It was found that these rays could be used to destroy cancer cells,just as they destroyed the healthy cells of the doctors who first used the machines.Methods were found later by which ulcers in the stomach could be located,and the lungs could be X-rayed to show if there was any tuberculosis present._______（49）A:The ray penetrated every one of them except the keyB:She was very surprised by this requestC:how then could any ray penetrateD:It was a great inventionE:Other uses came laterF: Doctors quickly saw how this could be used
It is imperative that students ____________ their term papers on time.A.hand inB.would hand inC.have to hand inD.handed in
When you want to saw metal, （）will be used.A、the hack sawB、the hand sawC、the wood working sawD、wood saw
单选题When hoisting a boat on gravity type davits using an electric motor driven winch，the davit arms should be brought up（）.Ato their final position with the winch operating at slow speedBto the bar stop，and then hand cranked to their final positionCuntil just before they make contact with the limit switch，and then hand cranked to their final positionDto the embarkation deck，and then hand cranked to their final position
单选题操作完后，关掉电动机。（）AAfter operation, start the electric motor.BBefore operation, stop the electric motor.CBefore operation, start the electric motor.DAfter operation, stop the electric motor.
单选题When would you ground an electric hand tool?（）AWhen it is a DC machineBWhen it is an AC machineCAny machine that operates on over 100 voltsDOnly when working on wet steel plates
单选题When you want to saw metal, （）will be used.Athe hack sawBthe hand sawCthe wood working sawDwood saw
单选题What type of electric motor is most commonly used on board ship?（）Anon-synchronous electric motorBsynchronous electric motorCfully enclosed electric motorDwatertight electric motor
单选题The hand steering is a method by which the motion of the rudder is controlled with （）.Aa motor-driven steering wheelBa pneumatic steering wheelCa hand-driven steering wheelDan electric steering wheel
单选题The naughty boy（）in his shoes when he saw the cane in his father's hand.AshiveredBtrembledCfrightenedDfeared