计算:(-2x3y)2÷(-4y)=______.
(-2x3y)2÷(-4y),
=4x6y2÷(-4y),
=-x6y.
___ a very rough sea, with waves ten metres high.
A.It were
B.This will be
C.It was
D.There’ll be
根据《抗菌药物临床应用管理办法》,二级以上医院应当设置感染性疾病科,配备感染性疾病专业医师,应当配备抗菌药物等相关专业的临床药师,并根据实际需要,建立符合实验室生物安全要求的临床微生物室。