可扩张静脉和动脉，首剂应减半的是
A. 硝酸甘油
B. 肼屈嗪
C. 哌唑嗪
D. 硝苯地平
E. 硝普钠
The party was held________.
A. at Jane’’s house
B. at Jane’’s aunt’’s house
C. at Jane’’s sister’’s house
D. at Jane’’s brother’’s house
RM越小，表示运动员对该负荷的重复次数越多，负荷强度越大。对于举重运动，训练时应多用接近或达到最大负荷的强度进行训练。 ( )
A. 对
B. 错
What’’s the difference between the two phases of experiments
A. The two kinds of vaccines were vaccinated together on volunteers in the first phase.
B. The two kinds of vaccines will be vaccinated together on volunteers in the second phase.
C. The combined safety of vaccines had been tested in the first phase.
D. The safety of each vaccine will be tested in the second phase.
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