escape
suggest
avoid
relieve
第1题：
You look very tired. You ____ too hard these days.
A. could have worked
B. ought to have worked
C. should have worked
D. must have worked
第2题：
If a refrigeration compressor is short cycling on high head pressure, you should _______.
A.purge the condenser if the waterside is dirty
B.check for proper water flow through the condenser
C.increase the high pressure cutout setting
D.reduce the cooling water flow
第3题：
29． Which of the following is NOT true?
A． The test is the most important for a student．
B． After class ,you should review what you have learned．
C． You should listen to your teacher and take notes carefully in class．
D． When you plan your time ,you should think of the time for eating ,sleeping and so on
第4题：
第5题：
In the doldrums you will NOT have ______.
A.high relative humidity
B.frequent showers and thunderstorm
C.steep pressure gradients
D.frequent calms
第6题：
If the head pressure of a reciprocating refrigeration compressor is excessive
A.the relief valve should open before the high pressure cutout
B.the relief valve should open and allow the excess refrigerant to flow to the receiver
C.the high pressure cutout switch should operate before the relief valve opens
D.you should close the discharging valve
第7题：
When a high pressure system is centered north of your vessel in the Northern Hemisphere ______．
A.You should experience hot，moist，clear weather
B.The wind direction is generally easterly
C.The winds should be from the southwest at your location
D.The winds should be brisk
第8题：
Which of the following statements is NOT true?
[A] Today you can get calcium without eating any high-fat or high-calorie food by choosing skim milk or low-fat yogurt.
[B] Calcium plays an important role in the movement of protein and nutrients inside cells.
[C] You can rely on pills instead of a calcium-rich diet to take enough calcium.
[D] If you want to absorb calcium, you should expose yourself to the sun's rays.
第9题：
第10题：