【单选题】People can’t___the fact that China is still a developing country.
【单选题】Doors and windows can't keep them out airport immigration officers can't stop them and the Internet is an absolute re production soil. They seem harmless in small doses, but large imports threaten Jap...
A.
that nothing can prevent it from entering into Japan
B.
that English is the most recognized language in the world
C.
that the government has not set up a special administration department to control this trend before it becomes popular in Japan
D.
not clearly mentioned in this passage
【简答题】简述带传动的优点? 2 .链传动的主要失效形式有哪些?
【简答题】The maximum resolution, or resolving power (the ability to distinguish two points) of a compound light microscope is ______μm; maximum magnification is__________.
【单选题】After resolving the trouble of main power supply, main switch of emergency generator should____, if power supply is refreshed.
A.
be switched off by the duty officer
B.
be switched on by the duty officer
C.
be switched off automatically
D.
be switched on automatically
【单选题】After resolving the trouble of main power supply, main switch of emergency generator should ________, if the power supply is refreshed.
A.
be switched off by the duty officer
B.
be switched on by the duty officer
C.
be switched off automatically
D.
be switched on automatically