单选题Before opening and closing the hatches, the spaces around the covers, all the parts and the gears should be （）.AclearedBcheckedCremovedDrepaired
单选题
Before opening and closing the hatches, the spaces around the covers, all the parts and the gears should be （）.
A
cleared
B
checked
C
removed
D
repaired
参考解析
解析：
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请认真阅读以下关于某传输系统的技术说明、状态转换图及C++代码，根据要求回答问题1和问题2。【说明】传输门是传输系统中的重要装置。传输门具有Open(打开)、Closed(关闭)、Opening(正在打开)、StayOpen(保持打开)和Closing(正在关闭)5种状态。触发状态的转换事件有click、complete和timeout 3种，事件与其相应的状态转换如图6-18所示。下面的【C++代码1】与【C++代码2】分别用两种不同的设计思路对传输门进行状态模拟，请填补代码段中的空缺语句。【C++代码1】const int CLOSED = 1; const int PENING = 2;const int PEN = 3; const int CLOSING = 4;const int STAYOPEN = 5; //定义状态变量，用不同整数表示不同状态class Door {private:private:int state; //传输门当前状态void setState(int state) { this-＞state = stale; } //设置当前状态public:Door () :state (CLOSED) { };void getState() { //根据当前状态输出相应的字符串switch(state) {case OPENING: cout ＜＜"OPENING" ＜＜ endl; break;case CLOSED: cout ＜＜ "CLOSED" ＜＜ endl; break;case OPEN: cout ＜＜ "OPEN" ＜＜ endl; break;case CLOSING: cout ＜＜ "CLOSING" ＜＜ endl; break;case STAYOPEN: cout ＜＜ "STAYOPEN" ＜＜ endl; break;}}void click() { //发生click事件时进行状态转换if ( (1) ) setState(OPENING);else if ( (2) ) setState(CLOSING);else if ( (3) ) setState(STAYOPEN);}void timeout() { //发生timeout事件时进行状态转换if (state == OPEN) setState(CLOSING);}void complete() { //发生complete事件时进行状态转换if (state == OPENING) setState(OPEN);else if (state == CLOSING) setState(CLOSED);}};int main(){Door aDoor;aDoor.getState(); aDoor.click(); aDoor.getState(); aDoor.complete();aDoor.getState(); aDoor.click(); aDoor.getState(); aDoor.click();aDoor.getState(); return 0;}【C++代码2】class Door {public:DoorState *CLOSED, *OPENING, *OPEN, *CLOSING, *STAYOPEN, *state;Door();virtual ～Door() { ... //释放申请的内存，此处代码省略};void s
How should cargo tank hatches be protected when the ullage opening is open and the tank NOT gas free?A.With gooseneck ventsB.With warning signsC.With flame screensD.With pressure-vacuum relief valves
Upon completion of fueling a gasoline driven vessel it is necessary to ______.A.keep ports，doors，windows，and hatches closedB.start engines immediatelyC.ventilate before starting engineD.None of the above
翻译：the opening and closing of vessel’s hatches is to be performed by ship’s crew at owner’s expenses.
开关舱的工作通常是由船员来做。（）A、The work of opening and closing hatches is usually done by crew members.B、The work of opening and closing hatch covers is usually done by crew members.C、The work of opening hatch covers is usually done by crew members.D、The work of closing hatch covers is usually done by crew members.
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单选题The opening or closing of the cylinder starting valve is controlled by （）.Athe starting air distributorBthe cut-off valve on the air mainCthe main starting valveDthe air bottle control valve
单选题开关舱的工作通常是由船员来做。（）AThe work of opening and closing hatches is usually done by crew members.BThe work of opening and closing hatch covers is usually done by crew members.CThe work of opening hatch covers is usually done by crew members.DThe work of closing hatch covers is usually done by crew members.
单选题Once a vessel has loaded packaged hazardous cargo，the cargo spaces shall be inspected. The spaces shall also be inspected at least once in every 24 hours. The only exception to daily inspection is when（）.Aa vessel is equipped with an automatic smoke or fire detecting systemBthe cargo hatches are of steel constructionCthe cargo is of a nonflammable typeDthere is sufficient fire protection located on the main deck adjacent to the cargo hatch
单选题According to the customs of this port，the work of opening and closing hatch covers is done by （）.Athe ship's officersBthe foreman from the shoreCthe ship's handsDthe tally man
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单选题The sailor keeping （）watch should clean the gangway, the rails, bulwark and the spaces around the gangway.AnavigationBgangwayCportDanchor
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问答题翻译：the opening and closing of vessel’s hatches is to be performed by ship’s crew at owner’s expenses.