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【单选题】
为了防止药物外溅,其预防措施不正确的是A.
抽取瓶装药物时,所抽药液以不超过注射器的1/2为宜
B.
稀释瓶装药物时,应插人双针头
C.
抽取药液时,用针腔较大的针头
D.
打开安瓿前时,应轻弹颈部使附着的药粉或药液降至底部
E.
折断安瓿应垫纱布
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【单选题】They had _______ wonderful train ride to Chengdu before they went on to _______ Mount Emei by bus.
A.
a; the
B.
/; the
C.
a; /
D.
the; a
【简答题】电火花成形加工中,影响加工速度的因素有哪些?
【简答题】电火花成形加工中,影响加工速度的因素有哪些?
【单选题】Bus travel nowadays
A.
is worse than before.
B.
is no better than before.
C.
is more convenient than before.
D.
is the same as before.
【单选题】John waited at the bus-stop for nearly half an hour the bus finally arrived .
A.
when
B.
as
C.
before
D.
while
【单选题】The price of the bus ticket is much ____ than before.
A.
cheap
B.
cheapest
C.
cheaper
D.
the cheapest
【单选题】——＿＿＿＿you ＿＿＿＿ the editor at the airport? —— No, he ＿＿＿＿ away before my arrival.
A.
Have...met； has driven
B.
Had...met； was driven
C.
Did...meet； had been driven
D.
Have...met； had driven
【单选题】Mike couldn’t find Kelly ____before the bus left, so he didn’t get on the bus.
A.
somewhere
B.
anywhere
C.
everywhere
D.
nowhere
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