卫生检疫机关如果发现在船舶实施出境检疫完毕后,又有人员上船或装卸货物的,应对该船舶重新实施出境检疫。()
查看答案
It is chiefly (9)_____ air that sound travels, so that if there were no air we should (10)_____ practically nothing. The atmosphere is held (11)_____ the earth's surface by the gravitational pull of the earth—that is, it has weight. High up it is thin (12)_____ near the surface it is compressed by the (13)_____ of air above, and is more dense. The weight of air pressing (14)_____ each square inch of surface at sea-level is nearly (15)_____ pounds, which means that the total force (16)_____ the skin of an average man is about 30,000 pounds. He is not, (17)_____ this because the pressure is equal in all directions and the pressure inside him is equal (18)_____ -that without, but should he go up in a balloon to a height at which the outside- pressure is (19)_____ he would suffer acutely. It is (20)_____ this reason that the cabins of aeroplanes are 'pressurized'.
A. forms
B. contains
C. consists
D. fills
A.sitB.setC.satD.settled
A. sit
B. set
C. sat
D. settled
What was the place like where Cather grew up?
A. It was cold, plain and without a church.
B. It was vast, open, flat, and wild.
C. It was like a German Christmas card.
D. It was a colorful world of wild flowers.
A.markingB.notingC.labelingD.spotting
A. marking
B. noting
C. labeling
D. spotting