题目内容

施工升降机突然停机或不能启动，其故障原因为停机电路及限位开关被启动，断路器启动。()

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It should be noted ______ the use of synthetic mooring ropes able to produce sparks by their manipulation is absolutely forbidden on board petroleum tankers and LPG or LNG carriers, or any vessels carring inflammable substances.

A. that
B. which
C. who
D. These

It may be found that, in certain circumstances, Rader Beacon emissions can cause ____ with

A. unwanted interference
B. unexpected figures
C. abnormal data
D. unwanted information

It may be found that, in certain circumstances, Rader Beacon can cause unwanted interference particularly ______.

A. at close range
B. at head on situation
C. at crossing situation
D. at end on situation

It is usually unnecessary，and indeed often impossible，______every printed clause．

A. to give rise to
B. giving give rise to
C. given give full effect to
D. to give full effect to